Create an AWS Lambda function with Python3 and integrate with S3? Simple if you know how (though getting there is a bitch, I bet Amazon does this on purpose as a way to trick developers in on their certification-ride). I found how, copy-paste below.

I have a Java app that runs on an regular Linux (EC2) instance, and logs to some folder on that machine. What I want is for Slack to be notified if any error occurs in the logs. This is possible through CloudWatch in almost all regions. Let me show you how!